An airtight connection assembly comprising conducting members constituting passages of a signal or fluid, a sealing part including a first sealing member with a shape which can cover a first hole formed in a partition of an airtight container and a sealing material, and a connecting part comprising a connector connected to either or both of ends of the conducting members, second holes formed in said first sealing member so as to communicate the inside and outside of the airtight container with each other, the conducting members are individually inserted through the second holes, and gaps between the conducting members and inner circumferential surfaces of the second holes are filled with a sealing material. Thereby, it is made possible to deliver and receive an electric signal etc. between the inside and outside of the airtight container while maintaining airtightness of the airtight container by a simple configuration.

A carburetor base of an engine defines an axial through hole and a pulsation hole channel. An anti-blocking component is mounted inside the axial through hole and defines an air inlet channel. The air inlet channel communicates with the pulsation hole channel so as to avoid blocking of condensed fuel oil inside the pulsation hole channel.

A carburetor base of an engine defines an axial through hole and a pulsation hole channel. An anti-blocking component is mounted inside the axial through hole and defines an air inlet channel. The air inlet channel communicates with the pulsation hole channel so as to avoid blocking of condensed fuel oil inside the pulsation hole channel.

An attachment for purging the inside of the carburetors which is comprised by a tubular device having a carburetor connecting member and quick connect receiver extension. The attachment is connected through the bottom of the carburetor or through the feed fuel line of the carburetor. The attachment is attachable to a quick disconnect fitting which can be connected to a conventional car tire air nozzle or pressurized can with the same fitting as the car tire nozzle. The attachment allows all the jets and passages located on the inside of carburetor to be purged at the same time with multiple short blasts of compressed air or pressurized can solvent but without the carburetor being removed from the engine or taken a part. The same principles can easily be applied to all type carburetors for either a two or four-stroke engine.

An attachment for purging the inside of the carburetors which is comprised by a tubular device having a carburetor connecting member and quick connect receiver extension. The attachment is connected through the bottom of the carburetor or through the feed fuel line of the carburetor. The attachment is attachable to a quick disconnect fitting which can be connected to a conventional car tire air nozzle or pressurized can with the same fitting as the car tire nozzle. The attachment allows all the jets and passages located on the inside of carburetor to be purged at the same time with multiple short blasts of compressed air or pressurized can solvent but without the carburetor being removed from the engine or taken a part. The same principles can easily be applied to all type carburetors for either a two or four-stroke engine.

A system and method to improve the efficiency of an internal combustion engine by delivering an air/fuel mixture to the combustion chamber in a pure gaseous state. The system accepts an air/fuel mixture from a carburetor or injector which is placed into a vaporized state before entering an expansion chamber and then the combustion chamber of the engine. An intake track capable of withstanding exhaust gas temperatures of an internal combustion engine is constructed and arranged to cause vaporization of fuel and inhibit the vaporization from condensing.

A system and method to improve the efficiency of an internal combustion engine by delivering an air/fuel mixture to the combustion chamber in a pure gaseous state. The system accepts an air/fuel mixture from a carburetor or injector which is placed into a vaporized state before entering an expansion chamber and then the combustion chamber of the engine. An intake track capable of withstanding exhaust gas temperatures of an internal combustion engine is constructed and arranged to cause vaporization of fuel and inhibit the vaporization from condensing.

In at least some implementations, a charge forming device includes a main body having a throttle bore, a throttle valve, a housing and a circuit board including a throttle position sensor and a pressure sensor. The throttle valve is received at least partially within the valve bore, is rotatable between an idle position and a second position, and includes a magnet that is rotated when the throttle valve rotates. The housing is carried by the main body, and the circuit board is carried by the housing. A signal path is defined leading from the pressure sensor to a pressure source, the signal path includes a liquid collection area located below a gaseous area with respect to gravity.

An attachment for purging the inside of the carburetors which is comprised by a tubular device having a carburetor connecting member and quick connect receiver extension. The attachment is connected through the bottom of the carburetor or through the feed fuel line of the carburetor. The attachment is attachable to a quick disconnect fitting which can be connected to a conventional car tire air nozzle or pressurized can with the same fitting as the car tire nozzle. The attachment allows all the jets and passages located on the inside of carburetor to be purged at the same time with multiple short blasts of compressed air or pressurized can solvent but without the carburetor being removed from the engine or taken a part. The same principles can easily be applied to all type carburetors for either a two or four-stroke engine.

An attachment for purging the inside of the carburetors which is comprised by a tubular device having a carburetor connecting member and quick connect receiver extension. The attachment is connected through the bottom of the carburetor or through the feed fuel line of the carburetor. The attachment is attachable to a quick disconnect fitting which can be connected to a conventional car tire air nozzle or pressurized can with the same fitting as the car tire nozzle. The attachment allows all the jets and passages located on the inside of carburetor to be purged at the same time with multiple short blasts of compressed air or pressurized can solvent but without the carburetor being removed from the engine or taken a part. The same principles can easily be applied to all type carburetors for either a two or four-stroke engine.